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2 years ago

Simplify V45 fully, giving your answer in the form avb What is the answer to this?

Mathematics

2 answers:

Sergeu [11.5K]2 years ago

7 0

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$=3\sqrt{5} .$

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Alexeev081 [22]2 years ago

7 0

Answer:

$\sqrt{45}$

$\sqrt{5 \times 3 \times 3}$

$\sqrt{5 { \times 3}^{2} }$

$3 \sqrt{5}$

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Listed below are prices in dollars for one night at different hotels in a certain region. Find the range, variance, and standar

hodyreva [135]

Answer:

Step-by-step explanation:

Given is a list of prices in dollars for one night at different hotels in a certain region

To find range, variance and std deviation.

Mean 155.75

Standard Error 23.80782434

Median 150

Mode #N/A

Standard Deviation 67.33869616

Sample Variance 4534.5

Kurtosis -1.593759971

Skewness 0.344624422

Range 172

Minimum 86

Maximum 258

Sum 1246

Count 8

Thus we find range = 172 $. This gives an idea about the lowest and highest difference.

Variance = Average of squares of deviations from the mean= 4533.329 $^2gives us an idea about the dispersion of data. This helps to have an idea about the price rise or low in different hotels

Std deviation is square root of variance 67.33 $ shows an idea about the dispersion and also coefficient of variation as a ratio of mean to std deviation.

6 0

2 years ago

Maridel wants to find out how many of her classmates plan to come to the next football game. There are 800 students in her schoo

suter [353]

Answer:

Maridel wants to find out how many of her classmates plan to come to the next football game. There are 800 students in her school. She selects a sample of the population by putting the names of every student into a bag and drawing out 100 names.

Which statement(s) describe her sampling method? Check all that apply.

A) Her method will produce a biased sample.

B) Her method will produce a valid sample.

C) Her method will produce a random sample.

D) Her method will produce a representative sample.

E) Her method will produce an invalid sample.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Solve the problem please

VARVARA [1.3K]

Answer: E

Step-by-step explanation:

4 0

2 years ago

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A triangle has vertices A(-6,3), B(1,5), and C(4,-4). this triangle is dilated with the origin at its center by a scale factor o

MrRissso [65]

Answer:

(8,-3) and (4,5)

Step-by-step explanation:

8 0

2 years ago

The fountain is made up of two semicircles and a quarter circle. Find the perimeter and the area of the fountain. Round the peri

Andrej [43]

FOUND THE COMPLETE QUESTION IN ANOTHER SOURCE.ATTACHED IMAGE.
For this case what we have is the following:
For the two semicircles we can model it as a complete circle.
We have to then:

Perimeter:
P = 2 * pi * r
or
P = pi * d
Where,
r = radius
d = diameter
Therefore the perimeter is:
P = 10 * pi
For the largest circle we have:
radius = 10
Perimeter:
P '= 2pi10
P '= 20pi
1/4 since 1/4 circle:
P '' = 20pi / 4 = 5pi
Then, the total perimeter of the source is:
Pt = P + P '' = 10pi + 5pi = 15pi
Pt = 15 * (3.141592)
Pt = 47.1239
round
Pt = 47.1 ft

Area:
The total area will be:
A = A (two semicircles) + A (quarter big circle)
A = (pi / 4) * (d ^ 2) + (1/4) * pi * r ^ 2
A = (pi / 4) * ((10) ^ 2) + (1/4) * pi * (5) ^ 2
A = 98.17477042 feet ^ 2
Round:
A = 98.2 feet ^ 2

Answer:
Perimeter of the source:
Pt = 47.1 ft
Area of the source:
A = 98.2 feet ^ 2

5 0

2 years ago